Preventing tempo marks stacking (redux)

[Daniel Rosen]

Consider the following example:

\version "2.17.95"
{
  \compressFullBarRests
  \tempo "Allegro moderato" 4 = 104
  R1*20
  \tempo "Molto meno mosso" 4 = 72
  R1*20
  \tempo "Tempo primo"
  R1
}

I'd like the MultiMeasureRests to expand automatically so that the 
MetronomeMarks don't get stacked on top of one another. Is there a way to make 
this happen? (When this question was asked on the list a couple years ago 
(http://thread.gmane.org/gmane.comp.gnu.lilypond.general/63752/focus=63799) the 
answer appeared to be "no," but I thought I'd ask again since that's a response 
I'm extremely unaccustomed to hearing from this community. :-P )

DR